Polishing device

ABSTRACT

A polishing device is used for polishing at least one workpiece and includes a bracket, at least one loading device, a number of polishing tools having different roughness, a number of first driving devices, a supporting device, and a second driving device. The at least one loading device is positioned on the bracket, and is used for loading the at least one workpiece. Each first driving device is used for driving a respective one of the polishing tools to rotate to polish one workpiece. The supporting device is connected to the bracket, and is used for loading the polishing tools and the first driving devices. The second driving device is connected to the supporting devices, and is used for driving the supporting device to rotate to select a proper one of the polishing tools.

BACKGROUND

1. Technical Field

The present disclosure relates to a polishing device.

2. Description of Related Art

Workpieces need to be polished by different polishing tools havingdifferent roughness in different steps of a polishing process. However,polishing devices usually have only one polishing tool to polish theworkpieces. Therefore, when a first polishing tool polishes theworkpieces, the polishing process must be temporarily stopped until thefirst polishing tool has been replaced with a second polishing toolwhich has a different roughness. This is very inconvenient, and the workefficiency is reduced.

Therefore, it is desirable to provide a polishing device that canovercome the above-mentioned limitations.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the embodiments should be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic view of a polishing device according to anexemplary embodiment.

FIG. 2 is a partially exploded view of the polishing device of FIG. 1.

FIG. 3 is an exploded view of a polishing tool, a supporting device, andfour first driving devices of the polishing device of FIG. 1.

DETAILED DESCRIPTION

Referring to FIGS. 1-3, a polishing device 11, according to anembodiment, is used for polishing a number of workpieces 22. Eachworkpiece 22 includes a plane surface 22 a that needs to be polished.The polishing device 11 includes a bracket 10, three loading devices 20,a horizontal driving device 30, a vertical driving device 40, asupporting device 50, four first driving devices 60, four polishingtools 70, a second driving device 80, and four nozzles 90. The number ofthe loading devices 20, the first driving device 60, the polishing tool70, and the nozzle 90 are not limited to this embodiment.

The bracket 10 includes a base 100 and two rectangular fixing frames101. The base 100 defines a cleaning tank 104 filled with water forcleaning the workpieces 22, and includes a rectangular platform 102,five pairs of fixing plates 108, and two sidewalls 100 a perpendicularlyextending from the two long edges of the platform 102. The platform 102defines four openings 106 along the length, communicating with thecleaning tank 104. The five pairs of fixing plates 108 are positionedalong the length of the platform 102. Each pair of fixing plates 108 arerespectively positioned on two long edges of the platform 102, and arealigned with each other. Each fixing plate 108 defines a mounting hole110. Each opening 106 is positioned between two adjacent pairs of fixingplates 108.

The two fixing frames 101 are fixed on the two sidewalls 100 arespectively. Each fixing frame 101 includes a mounting plate 103parallel to the platform 102, a first supporting plate 105 a, and asecond supporting plate 105 b. The first supporting plate 105 a and thesecond supporting plate 105 b perpendicularly extend from the two shortedges of the mounting plate 103.

Each loading device 20 includes a loading plate 200 and a drivingelement 201. The loading plate 200 includes a rectangular first mainbody 203 and a first shaft 204 positioned on an edge of the first mainbody 203. The first main body 203 defines a blind fixing groove 202 forreceiving and fixing the workpiece 22. The two ends of the first shaft204 are inserted into the two mounting holes 110 of the two oppositefixing plates 108 to rotatably connect the first main body 203 to thebase 100. The driving element 201 is connected to one end of the firstshaft 204, and is used for driving the loading plate 203 to rotatearound the first shaft 204.

The horizontal driving device 30 includes a strip-shaped stator 300 anda motor 302 slidably positioned on the stator 300. One end of the stator300 is fixed between the two first supporting plates 105 a, and theother end of the stator 300 is fixed to the two second supporting plates105 b. The stator 300 is aligned with the platform 102, and extendsparallel along the length of the platform 102. The motor 302 is adjacentto the loading plate 102 with respect to the stator 300. In thisembodiment, the horizontal driving device 30 is a linear-motor.

A vertical driving device 40 is connected to the horizontal drivingdevice 30, and includes a vertical motor 400 and two opposite rotatingplates 401. The vertical motor 400 includes a tube-shaped second mainbody 402 and a second shaft 404 extending through the second main body402. The two opposite ends of the second shaft 404 extend outwards fromthe second main body 402. The second main body 402 is connected to themotor 302, and the axial direction of the second shaft 404 isperpendicular to the extending direction of the stator 300. An outersidewall of the second shaft 404 has a protrusion 406 along the axialdirection. Each rotating plate 401 includes a rectangular third mainbody 403, a ring 405, and a block 407. The ring 405 perpendicularlyextends from a surface of the rotating plate 401 facing the otherrotating plate 401. An inner surface of each ring 405 defines areceiving groove 409 along the axial direction thereof. The two rings405 cover two ends of the second shaft 404, and the protrusion 406 isreceived in the two receiving grooves 409. Thus, the two rotating plates401 are symmetrically with each other about the vertical motor 400, andare able to be rotated by the vertical motor 400 to move toward or awayfrom the loading plate 102. The block 407 extends from one corner of thethird main body 403, and defines a pinhole 411.

The supporting device 50 is rotatably positioned between the two blocks407, and includes a circular first clamping plate 500 and a circularsecond clamping plate 501. The first clamping plate 500 defines athrough hole 502 in the center thereof. A surface of the first clampingplate 500 facing the second clamping plate 501 defines four firstmounting grooves 504 around the through hole 502. The four firstmounting grooves 504 are uniformly positioned on a circle taking thethrough hole 502 as a center point. A surface of the second clampingplate 501 facing the first clamping plate 500 defines four secondmounting grooves 505 aligned with the four first mounting groves 504. Aconnecting shaft 503 is aligned with the through hole 502 and extendsoutwards from the center of a surface of a second clamping plate 501opposite to the first clamping plate 500.

Each first driving device 60 includes a fourth main body 600 and a thirdshaft 602 rotatably positioned on one end of the fourth main body 600.The fourth main body 600 drives the third shaft 602 to rotate. Eachfourth main body 600 is fixedly received in the corresponding firstmounting groove 504.

Each polishing tool 70 can be driven by the corresponding first drivingdevice 60 to rotate, and includes a first end surface 70 a facing thesecond clamping plate 501, a second end surface 70 b opposite to thefirst end surface 70 a, and a circumferential sidewall 700 connectedbetween the first end surface 70 a and the second end surface 70 b. Afourth shaft 702 extends from the center of the first end surface 70 aalong the rotating axial direction of the polishing tool 70. The fourthshaft 702 is rotatably received in the corresponding second mountinggroove 505. The second end surface 70 b defines a receiving hole 704 atthe center thereof. The third shaft 602 is fixedly received in thecorresponding receiving hole 704. The circumferential sidewall 700polishes the workpiece 700. The roughness of the circumferentialsidewalls 700 of the four polishing tools 70 is different.

The second driving device 80 includes a fifth main body 800 and a fifthshaft 802 rotatably positioned on one end surface of the fifth main body800. The fifth main body 800 drives the fifth shaft 802 to rotate. Thefifth shaft 802 fixedly passes through the pinhole 411 adjacent to thefirst clamping plate 500 and the through hole 502 of the first clampingplate 500. The connecting shaft 503 is rotatably received in the pinhole411 adjacent to the second clamping shaft 500.

The four nozzles 90 spray polishing liquid at the workpieces 22. Twonozzles 90 are fixed on one of the two mounting plates 103 aligned withtwo of the corresponding openings 106 respectively, and the other twonozzles 90 are fixed on the other one of the two mounting plates 103aligned with the other two corresponding openings 106 respectively.

In use, first, the three fixing grooves 202 are upwardly facing. Each ofthe three workpieces 22 is fixed in a corresponding fixing groove 202,and the plane surface 22 a faces the stator 300. The vertical motor 400drives the rotating plates 401 to rotate, and thus the supporting device50 moves towards the base 100. The second driving device 80 drives thesupporting device 50 to rotate until that a particular polishing tool 70faces one workpiece 22. The vertical motor 400 drives the particularpolishing tool 70 to contact with the workpiece 22. The four nozzles 90spray the polishing liquid at the four workpieces 22. One first drivingdevice 60 drives the particular polishing tool 70 to rotate to polishthe workpiece 22. Then, the horizontal driving device 30 drives theparticular polishing tool 70 to move along the stator 300, and thus topolish the plane surfaces 22 a of the other three workpieces 22. After apredetermined time interval, the second driving device 80 rotates thesupporting device 50 to allow another polishing tool 70 to polish theplane surfaces 22 a of the four workpieces 22. After the polishingprocess is finished, the driving element 201 drives the first main body203 to rotate to be received in the cleaning tank 104, and the polishedworkpiece can be washed. In this way, different polishing tools 70 canbe used to polish the same workpiece conveniently, and the workefficiency is improved.

It will be understood that the above particular embodiments and methodsare shown and described by way of illustration only. The principles andthe features of the present disclosure may be employed in various andnumerous embodiments thereof without departing from the scope of thedisclosure as claimed. The above-described embodiments illustrate thescope of the disclosure but do not restrict the scope of the disclosure.

1. A polishing device for polishing at least one workpiece, comprising:a bracket; at least one loading device positioned on the bracket, andconfigured for loading the at least one workpiece; a plurality ofpolishing tools having different roughness; a plurality of first drivingdevices, each first driving device configured for driving a respectiveone of the polishing tools to rotate to polish one of the at least oneworkpiece; a supporting device connected to the bracket, and configuredfor loading the polishing tools and the first driving devices; and asecond driving device connected to the supporting devices, andconfigured for driving the supporting device to rotate to select aproper one of the polishing tools.
 2. The polishing device of claim 1,wherein the bracket comprises a base and two parallel fixing framesfixed on two opposite surfaces of the base, the base has a platform, theloading devices are positioned on the platform.
 3. The polishing deviceof claim 2, wherein the base defines a cleaning tank, the platformdefines at least one opening communicating with the cleaning tank. 4.The polishing device of claim 3, wherein each of the at least oneloading device comprises a loading plate and a driving element, theloading plate comprises a first main body and a first shaft on one edgeof the first main body, the first shaft is rotatably positioned on theplatform, the driving element is connected to the first shaft and isconfigured for driving the first main body to rotate around the firstshaft to be received in the cleaning tank through a respective one ofthe at least one opening after the at least one workpiece has beenpolished.
 5. The polishing device of claim 4, wherein the bracketfurther comprises at least one pair of fixing plates, each pair offixing plates are opposite to each other, and are positioned on theplatform, each fixing plate defines a mounting hole, two ends of thefirst shaft are received in the two mounting holes of a correspondingpair of fixing plates.
 6. The polishing device of claim 4, wherein thefirst main body defines a fixing groove for fixing a workpiece.
 7. Thepolishing device of claim 2, wherein each of the two fixing framescomprises a mounting plate, a first supporting plate, and a secondsupporting plate, the first supporting plate and the second supportingplate perpendicularly extend from two opposite edges of the mountingplate.
 8. The polishing device of claim 7, wherein the polishing devicefurther comprises at least one nozzle spatially corresponding to the atleast one loading device, the at least one nozzles are positioned on themounting plates and is configured for spraying polishing liquid to theat least one workpiece.
 9. The polishing device of claim 7, wherein thepolishing device further comprises a horizontal driving device, thehorizontal driving device comprises a stator and a rotator, one end ofthe stator is positioned between the two first supporting plates, theother end of the stator is positioned between the two second supportingplates, and thus the stator is aligned with the platform, the rotator iscapable of moving along the stator.
 10. The polishing device of claim 9,wherein the polishing device further comprises a vertical driving devicepositioned on the rotator, the vertical driving device comprises avertical motor and two opposite rotating plates, the vertical motorcomprises a tubular second main body and a second shaft extendingthrough the second main body, an outer sidewall of the second shaft hasa protrusion along the axial direction of the second shaft, each of thetwo rotating plate comprises a third rectangular main body and a ringcovering one end of the second shaft, an inner sidewall of the ringdefines a receiving groove receiving the protrusion, one corner of thethird main body protrudes a block, the supporting device is rotatablyconnected between the blocks of the two rotating plates.
 11. Thepolishing device of claim 10, wherein the supporting device comprises afirst clamping plate and a second clamping plate aligned with the firstclamping plate, the first clamping plate defines a through hole at thecenter thereof, and a plurality of first mounting grooves around thethrough hole, the second clamping plate defines a plurality of secondmounting grooves corresponding to the first mounting groovesrespectively; each first driving device comprises a fourth main body anda third shaft rotatably positioned on the fourth main body, the fourthmain body is received in a corresponding first mounting groove, thethird shaft is configured for connecting to one end of a correspondingpolishing tool, each second mounting groove is configured for receivingthe other end of the corresponding polishing tool.
 12. The polishingdevice of claim 11, wherein each block defines a pinhole; a surface ofthe second clamping plate facing away the first clamping plate has aconnecting shaft; the second driving device comprises a fourth shaft anda fifth main body for driving the fourth shaft to rotate, the fourthshaft extends through the pinhole of one block and the through hole, theconnecting shaft is received in the pinhole of the other one block.